Include message type in TypedMessenger errors.

[jespertheend]

The stack trace from TypedMessenger errors can still be pretty unhelpful.
When using WebSockets for instance it will only list the WebSocket message event callback.

Extra information which could be included in the error message would be the name of the function that caused the error.

Also see #814

[jespertheend]

Actually it might be possible to 'fix' this stack trace. For instance, this doesn't print a useful stack trace:

async function foo() {
    await bar();
}

async function bar() {
    await new Promise((resolve, reject) => {
        setTimeout(() => {
            reject(new Error("oh no"))
        }, 1000);
    });
}

foo()

But this does:

async function foo() {
    await bar();
}

async function bar() {
    const p = new Promise((resolve, reject) => {
        setTimeout(() => {
            reject(new Error("oh no"))
        }, 1000);
    });

    try {
        await p;
    } catch (e) {
        e.stack = new Error().stack;
        throw e;
    }
}

foo()